Comparison of TOA and BOA LW Radiation Fluxes Inferred From Ground‐Based Sensors, A‐Train Satellite Observations and ERA Reanalyzes at the High Arctic Station Eureka Over the 2002–2020 Period
International audience This study focuses on the accuracy of longwave radiation flux retrievals at the top and bottom of the atmosphere at Eureka station, Canada, in the high Arctic. We report comparisons between seven products derived from (a) calculations based on a combination of ground-based and...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-03341720 https://doi.org/10.1029/2020JD033615 |
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ftccsdartic:oai:HAL:insu-03341720v1 2023-05-15T14:56:36+02:00 Comparison of TOA and BOA LW Radiation Fluxes Inferred From Ground‐Based Sensors, A‐Train Satellite Observations and ERA Reanalyzes at the High Arctic Station Eureka Over the 2002–2020 Period Blanchard, Yann Pelon, Jacques Cox, Christopher Delanoë, Julien Eloranta, Edwin Uttal, Taniel Centre ESCER Université du Québec à Montréal = University of Québec in Montréal (UQAM) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS) Cooperative Institute for Research in Environmental Sciences (CIRES) University of Colorado Boulder -National Oceanic and Atmospheric Administration (NOAA) National Oceanic and Atmospheric Administration (NOAA) SPACE - LATMOS Space Science and Engineering Center Madison (SSEC) University of Wisconsin-Madison 2021-06-16 https://hal-insu.archives-ouvertes.fr/insu-03341720 https://doi.org/10.1029/2020JD033615 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JD033615 insu-03341720 https://hal-insu.archives-ouvertes.fr/insu-03341720 doi:10.1029/2020JD033615 ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal-insu.archives-ouvertes.fr/insu-03341720 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2021, 126 (11), pp.e2020JD033615. ⟨10.1029/2020JD033615⟩ clouds high Arctic intercomparison radiation re-analyses satellite data [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.1029/2020JD033615 2021-12-05T00:00:20Z International audience This study focuses on the accuracy of longwave radiation flux retrievals at the top and bottom of the atmosphere at Eureka station, Canada, in the high Arctic. We report comparisons between seven products derived from (a) calculations based on a combination of ground-based and space-based lidar and radar observations, (b) standard radiometric observations from the CERES sensor, (c) direct observations at the surface from a broadband radiation station, and (d) the ERA-Interim and ERA5 reanalyzes. Statistical, independent analyses are first performed to look at recurring bias and trends in fluxes at Top and Bottom of the Atmosphere (TOA, BOA). The analysis is further refined by comparing fluxes derived from coincident observations decomposed by scene types. Results show that radiative transfer calculations using ground-based lidar-radar profiles derived at Eureka agree well with TOA LW fluxes observed by CERES and with BOA LW fluxes reference. CloudSat-CALIPSO also shows good agreement with calculations from ground-based sensor observations, with a relatively small bias. This bias is shown to be largely due to low and thick cloud occurrences that the satellites are insensitive to owing to attenuation from clouds above and surface clutter. These conditions of opaque low clouds, cause an even more pronounced bias for CERES BOA flux calculation in winter, due to the deficit of low clouds identified by MODIS. ERA-I and ERA5 fluxes behave differently, the large positive bias observed with ERA-I is much reduced in ERA5. ERA5 is closer to reference observations due to better behavior of low and mid-level clouds and surface temperature. Article in Journal/Newspaper Arctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Boa ENVELOPE(15.532,15.532,66.822,66.822) Canada Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) Journal of Geophysical Research: Atmospheres 126 11 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
clouds high Arctic intercomparison radiation re-analyses satellite data [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
clouds high Arctic intercomparison radiation re-analyses satellite data [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Blanchard, Yann Pelon, Jacques Cox, Christopher Delanoë, Julien Eloranta, Edwin Uttal, Taniel Comparison of TOA and BOA LW Radiation Fluxes Inferred From Ground‐Based Sensors, A‐Train Satellite Observations and ERA Reanalyzes at the High Arctic Station Eureka Over the 2002–2020 Period |
topic_facet |
clouds high Arctic intercomparison radiation re-analyses satellite data [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience This study focuses on the accuracy of longwave radiation flux retrievals at the top and bottom of the atmosphere at Eureka station, Canada, in the high Arctic. We report comparisons between seven products derived from (a) calculations based on a combination of ground-based and space-based lidar and radar observations, (b) standard radiometric observations from the CERES sensor, (c) direct observations at the surface from a broadband radiation station, and (d) the ERA-Interim and ERA5 reanalyzes. Statistical, independent analyses are first performed to look at recurring bias and trends in fluxes at Top and Bottom of the Atmosphere (TOA, BOA). The analysis is further refined by comparing fluxes derived from coincident observations decomposed by scene types. Results show that radiative transfer calculations using ground-based lidar-radar profiles derived at Eureka agree well with TOA LW fluxes observed by CERES and with BOA LW fluxes reference. CloudSat-CALIPSO also shows good agreement with calculations from ground-based sensor observations, with a relatively small bias. This bias is shown to be largely due to low and thick cloud occurrences that the satellites are insensitive to owing to attenuation from clouds above and surface clutter. These conditions of opaque low clouds, cause an even more pronounced bias for CERES BOA flux calculation in winter, due to the deficit of low clouds identified by MODIS. ERA-I and ERA5 fluxes behave differently, the large positive bias observed with ERA-I is much reduced in ERA5. ERA5 is closer to reference observations due to better behavior of low and mid-level clouds and surface temperature. |
author2 |
Centre ESCER Université du Québec à Montréal = University of Québec in Montréal (UQAM) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS) Cooperative Institute for Research in Environmental Sciences (CIRES) University of Colorado Boulder -National Oceanic and Atmospheric Administration (NOAA) National Oceanic and Atmospheric Administration (NOAA) SPACE - LATMOS Space Science and Engineering Center Madison (SSEC) University of Wisconsin-Madison |
format |
Article in Journal/Newspaper |
author |
Blanchard, Yann Pelon, Jacques Cox, Christopher Delanoë, Julien Eloranta, Edwin Uttal, Taniel |
author_facet |
Blanchard, Yann Pelon, Jacques Cox, Christopher Delanoë, Julien Eloranta, Edwin Uttal, Taniel |
author_sort |
Blanchard, Yann |
title |
Comparison of TOA and BOA LW Radiation Fluxes Inferred From Ground‐Based Sensors, A‐Train Satellite Observations and ERA Reanalyzes at the High Arctic Station Eureka Over the 2002–2020 Period |
title_short |
Comparison of TOA and BOA LW Radiation Fluxes Inferred From Ground‐Based Sensors, A‐Train Satellite Observations and ERA Reanalyzes at the High Arctic Station Eureka Over the 2002–2020 Period |
title_full |
Comparison of TOA and BOA LW Radiation Fluxes Inferred From Ground‐Based Sensors, A‐Train Satellite Observations and ERA Reanalyzes at the High Arctic Station Eureka Over the 2002–2020 Period |
title_fullStr |
Comparison of TOA and BOA LW Radiation Fluxes Inferred From Ground‐Based Sensors, A‐Train Satellite Observations and ERA Reanalyzes at the High Arctic Station Eureka Over the 2002–2020 Period |
title_full_unstemmed |
Comparison of TOA and BOA LW Radiation Fluxes Inferred From Ground‐Based Sensors, A‐Train Satellite Observations and ERA Reanalyzes at the High Arctic Station Eureka Over the 2002–2020 Period |
title_sort |
comparison of toa and boa lw radiation fluxes inferred from ground‐based sensors, a‐train satellite observations and era reanalyzes at the high arctic station eureka over the 2002–2020 period |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03341720 https://doi.org/10.1029/2020JD033615 |
long_lat |
ENVELOPE(15.532,15.532,66.822,66.822) ENVELOPE(-85.940,-85.940,79.990,79.990) |
geographic |
Arctic Boa Canada Eureka |
geographic_facet |
Arctic Boa Canada Eureka |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal-insu.archives-ouvertes.fr/insu-03341720 Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2021, 126 (11), pp.e2020JD033615. ⟨10.1029/2020JD033615⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JD033615 insu-03341720 https://hal-insu.archives-ouvertes.fr/insu-03341720 doi:10.1029/2020JD033615 |
op_doi |
https://doi.org/10.1029/2020JD033615 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
126 |
container_issue |
11 |
_version_ |
1766328694208462848 |